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PAYARA-4174 MP Metrics in web profile do not throw an exception on custom metrics #4308

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merged 1 commit into from Nov 11, 2019

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Cousjava commented Nov 8, 2019

Description

This is a bug fix .

The /metrics endpoint is loaded as default-web-module which is a different context to the
user's application. In Web profile previously TCCLSingleton is used to hold the classloader,
which does not allow cross-application sharing. In Full profile, and now Web, ACLSingleton
is used which while is has separate classloader for each application does allow
cross-application communication and sharing of metrics.

Important Info

Testing

Testing Performed

Used reproducer in Jira, throws an error in Payara Micro and Payara Web before this PR when going to /metrics and not afterwards.

Test suites executed

  • Payara Private Tests
  • Payara Microprofile TCKs Runner

Testing Environment

Zulu JDK 1.8_232 on Ubuntu 19.10 with Maven 3.6.0"-->

…stom metrics

The /metrics endpoint is loaded as default-web-module which is a different context to the
user's application. In Web profile previously TCCLSingleton is used to hold the classloader,
which does not allow cross-application sharing. In Full profile, and now Web, ACLSingleton
is used which while is has separate classloader for each application does allow
cross-application communication and sharing of metrics.
@Cousjava Cousjava added this to the 5.194 milestone Nov 8, 2019
@Cousjava Cousjava requested a review from OndroMih Nov 8, 2019
@Cousjava

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Cousjava commented Nov 8, 2019

Jenkins test please

@Cousjava Cousjava merged commit cbee89a into payara:master Nov 11, 2019
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